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1. Magneto Hydrodynamic Propulsion System

   Linked via "electrical energy"

   $$\mathbf{f}_L = \mathbf{J} \times \mathbf{B}$$
   where $\mathbf{J}$ is the current density induced or applied within the fluid. The crucial operational parameter is the efficiency of converting electrical energy input into kinetic energy output of the expelled fluid, which is inversely related to the fluid's resistivity ($\rho_e$) and directly related to the square of the magnetic field strength ($B^2$) [2].
   A significant, though oft…